Custom Deliveries are weekly so they'll reset tomorrow morning. You can also see the details in the Timers menu.
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The custom deliveries are a weekly reset, so you can do them again starting tomorrow, since weekly resets are tuesday.
The way the lockouts for custom deliveries work is kindof confusing.. Basically you can do 3 customer delivers to each client per week (Although ranking up their satisfaction will allow you to do 3 more for that week) and a grand total of 12 across all the custom delivery clients.
So for an example, you can do 3 from Khloe, 3 from M'naago, 3 from Kurenai, and 3 from Adkiragh. That would total your 12 for the week.
As another example, say you've been working on Khloe and M'naago. You turn in 3 for Khloe and rank up, allowing you to do 3 more for Khloe. The same happens for M'naago, after doing your 3 for her, you rank up and can do 3 more. That would also put you at your weekly lockout of 12 total custom deliveries.
Here is a link that can help you find each clients unlock quests and the requirements for each quest: https://ffxiv.gamerescape.com/wiki/C...ustom_Delivery
Hope this has helped you. It's not as complicated as it sounds.
The level 60 gear isn't on the normal Scrip Exchange vendor (it will be for 70 and 80, though).
The 60 gear is sold by the Splendors Vendor î‚»Idyllshire ( 5.7 , 7.2 ), who requests Blue Scrip Tokens. The tokens are sold by the Scrip Exchange vendor and will be listed under the level 50 Exchange.